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Honda CB450K (1969-70)

Entry updated

Honda CB450K (1969-70)

At a glance

Capacity
445 cc / 27.1 cu-in
Power
45 hp / 32.8 kW @ 9000 rpm
Torque
37.4 Nm / 27.6 lb-ft @ 7000 rpm

The full picture.

The Honda CB 450 motorcycle was produced between 1969 and 1970. It has a four stroke, parallel twin cylinder engine that has a capacity of 445 cc. The cooling system is air cooled and the compression ratio is 9.0:1. Induction is via 2x 32mm Keihin carburetors and ignition is through a coil with auto-advance and twin contact breaker, where starting is done via kick. The motorcycle has a maximum power of 45 hp at 9000 rpm and a maximum torque of 37.4 Nm at 7000 rpm. The transmission is a 5-speed and the final drive is through a chain. It has a tubular semi-duplex cradle with single front down-tube for the frame, with telescopic forks with two-way damping and swing arm shock absorbers with adjustable preload for the suspension. The front brake is a single disc and the rear brake is a drum. The front and rear tires are 3.25-18 and 3.50-18, respectively, while the wheelbase measures at 1300mm. Dry weight of the motorcycle is at 187 kg and wet weight is 204.0kg. The fuel capacity of the motorcycle is 14 litres or 3.7 US gallons.


Technical specifications:

Make Model: Honda CB 450

Motorcycle technical specifications
Year1969 – 70
EngineFour stroke, parallel twin cylinder, DOHC, 2 valves per cylinder
Capacity445 cc / 27.1 cu-in
Bore x Stroke70 x 57.8 mm
Cooling SystemAir cooled
Compression Ratio9.0:1
Induction2x 32mm Keihin carburetors
IgnitionCoil with auto-advance, twin contact breaker
StartingKick
Max Power45 hp / 32.8 kW @ 9000 rpm
Max Torque37.4 Nm / 27.6 lb-ft @ 7000 rpm
Transmission5 Speed
Final DriveChain
FrameTubular semi-duplex cradle with single front down-tube
Front SuspensionTelescopic forks with two-way damping.
Rear SuspensionSwing arm, shock absorbers with adjustable preload
Front BrakesSingle disc
Rear BrakesDrum
Front Tyre3.25-18
Rear Tyre3.50-18
Wheelbase1300 mm / 53 in
Dry Weight187 kg / 412 lbs
Wet Weight204.0 kg / 449.7 lbs
Fuel Capacity14 Litres / 3.7 US gal